Rcbs Flat Nose Rifle Bullet Mould - Double Cavity .458" 300 Gr

The RCBS Flat Nose Rifle Bullet Mould in .458" 300 gr is a double-cavity casting tool built for handloaders who want to produce their own big-bore rifle projectiles at a fraction of commercial ammunition costs. Whether you're reloading for a .458 Winchester Magnum, .458 SOCOM, or another large-bore rifle cartridge, this mould lets you cast consistent, quality bullets in volume—two at a time—without the premium price tag of factory ammo.

Built from solid cast iron, this mould is engineered to handle the demands of serious reloading work. The 3/16-inch solid steel sprue plate and tempered steel fasteners are designed for years of reliable service, and the mould is ground to precision square to ensure dimensional consistency between cavities. If you're casting 300-grain flat-nose projectiles regularly, a double-cavity mould cuts your casting time in half compared to single-cavity alternatives, making it a smart investment for volume shooters.

RCBS moulds are known for holding tight tolerances and producing uniform bullets—critical for accuracy and consistent feeding in rifle chambers. The flat-nose profile is favored by hunters and shooters using lever-action rifles, dangerous-game rifles, and other platforms where the design offers reliable performance. Handles are sold separately, so you can configure your setup to fit your casting bench and preferences.

Key Features

• Double-cavity design casts two .458" 300 gr bullets per cycle
• Solid cast iron construction for durability and heat retention
• 3/16-inch solid steel sprue plate for consistent sprue breakage
• Tempered steel spring washers and screws for long-term reliability
• Precision-ground to tight tolerances for uniform bullets
• Flat-nose profile for lever-action and dangerous-game rifles
• Handles available separately for custom setup options

Specifications

Frequently Asked Questions

What rifles is the .458" 300 gr flat-nose bullet suitable for?

The .458" diameter is used in cartridges like the .458 Winchester Magnum, .458 SOCOM, and other large-bore rifle platforms. The flat-nose design is particularly popular for lever-action rifles and dangerous-game rifles. Always verify that the bullet dimensions and profile are appropriate for your specific rifle and cartridge before casting.

Do I need to buy handles separately?

Yes, handles are sold separately for this mould. This gives you the flexibility to choose a handle style that fits your casting setup and preferences, or to use it with a mould handle block if you prefer.

Is this a single or double-cavity mould?

This is a double-cavity mould, meaning it casts two bullets per cycle. This significantly speeds up production compared to single-cavity moulds, making it ideal for shooters who cast in volume.

What kind of lead should I use in this mould?

We've provided only the mould specifications. For lead alloy recommendations and casting best practices, consult the RCBS documentation or reloading manuals specific to your cartridge and bullet design.